Keiichi Okajima - Articles - Scientific Research Publishing

Experimental Study of Non-Destructive Approach on PEMFC Stack Using Tri-Axis Magnetic Sensor Probe (Articles)

Yutaro Akimoto, Keiichi Okajima

Journal of Power and Energy Engineering Vol.3 No.3，March 12, 2015

DOI: 10.4236/jpee.2015.33001 2,480 Downloads 3,384 Views Citations
A Method for the Detection of Decrease in Power in PV Systems Using Satellite Data (Articles)

Kota Kawasaki, Keiichi Okajima

Smart Grid and Renewable Energy Vol.10 No.1，January 15, 2019

DOI: 10.4236/sgre.2019.101001 1,195 Downloads 1,965 Views Citations
Photovoltaic Power Potential Analysis in Equator Territorial: Case Study of Makassar City, Indonesia (Articles)

Muhammad Akbar Sihotang, Keiichi Okajima

Journal of Power and Energy Engineering Vol.5 No.1，January 10, 2017

DOI: 10.4236/jpee.2017.51002 2,797 Downloads 4,635 Views Citations
This article belongs to the Special Issue on Energy Security and Renewable Techniques
Tapping the Potential of Large Scale Solar PV System in Sabah: The Feasibility Analysis (Articles)

Maryam Huda, Keiichi Okajima, Kengo Suzuki

Energy and Power Engineering Vol.9 No.2，February 27, 2017

DOI: 10.4236/epe.2017.92009 2,240 Downloads 4,738 Views Citations
This article belongs to the Special Issue on Solar Energy and Applications
Flow-Induced Stream-Wise Vibration of Circular Cylinders (Articles)

Atsushi Okajima, Takahiro Kiwata

Journal of Flow Control, Measurement & Visualization Vol.7 No.3，July 15, 2019

DOI: 10.4236/jfcmv.2019.73011 901 Downloads 2,263 Views Citations
S¹-Equivariant CMC Surfaces in the Berger Sphere and the Corresponding Lagrangians (Articles)

Keiichi Kikuchi

Advances in Pure Mathematics Vol.3 No.2，March 7, 2013

DOI: 10.4236/apm.2013.32037 3,865 Downloads 6,544 Views Citations
Evaluation of Integer Programming Solvers to Improve the Efficiency of Individual Work Planning (Articles)

Keiichi Takahashi

Open Journal of Modelling and Simulation Vol.13 No.1，January 14, 2025

DOI: 10.4236/ojmsi.2025.131003 23 Downloads 120 Views Citations
Evaluation of Characteristics of Phase Change Heat Transfer in Ultrafine Cryoprobe (Articles)

Junnosuke Okajima, Atsuki Komiya, Shigenao Maruyama

Journal of Flow Control, Measurement & Visualization Vol.2 No.2，April 15, 2014

DOI: 10.4236/jfcmv.2014.22008 2,877 Downloads 4,550 Views Citations
Unsteady Behavior of Cavitating Waterjet in an Axisymmetric Convergent-Divergent Nozzle: High Speed Observation and Image Analysis Based on Frame Difference Method (Articles)

Shota Hayashi, Keiichi Sato

Journal of Flow Control, Measurement & Visualization Vol.2 No.3，July 24, 2014

DOI: 10.4236/jfcmv.2014.23011 4,217 Downloads 5,716 Views Citations
Further Improvement of Reflection Efficiency of a Magnetic Mirror and Replenishment against Loss of Escaping Deuteron Ions (Articles)

Mitsuaki Nagata, Keiichi Sawada

Journal of Modern Physics Vol.10 No.2，February 27, 2019

DOI: 10.4236/jmp.2019.102011 678 Downloads 1,215 Views Citations
Possibility for Short-Term Forecasting of Japanese Stocks Return by Randomly Distributed Embedding Theory (Articles)

Seisuke Sugitomo, Keiichi Maeta

Journal of Mathematical Finance Vol.9 No.3，July 8, 2019

DOI: 10.4236/jmf.2019.93015 689 Downloads 1,941 Views Citations
Effect of Viscosity on Pumping-Up of Newtonian Fluid Driven by a Rotating Cone (Articles)

Takahiro Adachi, Yutaro Takahashi, Takeshi Akinaga, Junnosuke Okajima

Journal of Flow Control, Measurement & Visualization Vol.6 No.2，April 12, 2018

DOI: 10.4236/jfcmv.2018.62006 915 Downloads 1,941 Views Citations
Identifier Migration for Identity Continuance in Single Sign-On (Articles)

Yoshio Kakizaki, Kazunari Maeda, Keiichi Iwamura

Journal of Information Security Vol.3 No.4，October 31, 2012

DOI: 10.4236/jis.2012.34037 5,221 Downloads 8,012 Views Citations
Performances and Rotating Flows of Rotary Jet Pump (Articles)

Keiichi Komaki, Toshiaki Kanemoto, Kenji Sagara

Open Journal of Fluid Dynamics Vol.2 No.4A，January 2, 2013

DOI: 10.4236/ojfd.2012.24A048 5,610 Downloads 8,708 Views Citations
This article belongs to the Special Issue on Thermophysics and Fluid Science
Corporate Financing, Taxation, and Tobin’s q: Evidence from Japanese Firms and Industries (Articles)

Keiichi Kubota, Susumu Saito, Hitoshi Takehara

Journal of Mathematical Finance Vol.3 No.3A，October 8, 2013

DOI: 10.4236/jmf.2013.33A004 5,611 Downloads 8,542 Views Citations
This article belongs to the Special Issue on Corporate Finance
High Speed Observation of Periodic Cavity Behavior in a Convergent-Divergent Nozzle for Cavitating Water Jet (Articles)

Keiichi Sato, Yuta Taguchi, Shota Hayashi

Journal of Flow Control, Measurement & Visualization Vol.1 No.3，October 8, 2013

DOI: 10.4236/jfcmv.2013.13013 7,750 Downloads 13,382 Views Citations
Power Generation Optimization in ASEAN by 2030 (Articles)

N. Agya Utama, Keiichi N. Ishihara, Tetsuo Tezuka

Energy and Power Engineering Vol.4 No.4，June 25, 2012

DOI: 10.4236/epe.2012.44031 7,626 Downloads 12,611 Views Citations
Crystallization of Amorphous Poly(Lactic Acid) Induced by Vapor of Acetone to Form High Crystallinity and Transparency Specimen (Articles)

Naofumi Naga, Yuji Yoshida, Keiichi Noguchi, Shigemitsu Murase

Open Journal of Polymer Chemistry Vol.3 No.2，May 10, 2013

DOI: 10.4236/ojpchem.2013.32006 6,244 Downloads 10,865 Views Citations
Complementary and alternative medicine use by Japanese children with pediatric surgical diseases (Articles)

Keiichi Uchida, Mikihiro Inoue, Kohei Otake, Yuhki Koike, Masato Kusunoki

Open Journal of Pediatrics Vol.3 No.2，June 3, 2013

DOI: 10.4236/ojped.2013.32010 4,359 Downloads 6,964 Views Citations
MEMRECS—A Sustainable View for Metal Recycling from Waste Printed Circuit Boards (Articles)

Hoang-Long Le, Eiji Yamasue, Hideyuki Okumura, Keiichi N. Ishihara

Journal of Environmental Protection Vol.4 No.8，August 5, 2013

DOI: 10.4236/jep.2013.48094 5,806 Downloads 8,414 Views Citations

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